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| 1935-aug | Laid down |  A146 HMS Protector as a Net Layer | |
| 1936-aug | Launched | A146 HMS Protector | |
| 1936-dec-30 | Commissioned | A146 HMS Protector | |
| 1953-jun-15 | Deployment | A146 HMS Protector  Fleet Review: Coronation Review of the Fleet as part of Home Fleet - Plymouth | |
| 1954 | Refit | A146 HMS Protector until 1955 at HMD Devonport from Net Layer to Ice Patrol Ship with flight deck and essentially a re-inforced canvass hangar. | |
| 1955-jul | Aircraft | A146 HMS Protector 701 Squadron P Flight formed with 2x Whirlwind HAR.1 for use during Antarctic summer deployments. | |
| 1955-sep | Aircraft | A146 HMS Protector short term allocated Whirlwind HAR.3 XJ399 to P Flt, until mid Oct 1955. | |
| 1955-sep | Aircraft | A146 HMS Protector allocated Whirlwind HAR.1 XA866/910 until c Sep 1956, when recoded /990 until c Apr 1957 | |
| 1956-oct-5 | Deployment | A146 HMS Protector departed HMNB Portsmouth for second Antarctic summer deployment as Survey Support and South Atlantic Guardship, arriving on station 9 Nov. 701 NAS P Flt Whirlwinds HAR.1 XA866/990 and XA870/991, embarked. | |
| 1957-jul | | A146 HMS Protector allocated Whirlwind HAR.1 XA868 /990 | |
| 1958-aug | Aircraft | A146 HMS Protector allocated 701 Sq P Flt Whirlwind HAR.1 XA862 until c Aug 1959 | |
| 1959-may | Aircraft | A146 HMS Protector returned to HMNB Portsmouth after Antarctic duties, with Ships Flt Whirlwind HAR.1 XA869/991 plus one other (likely XA862), embarked. | |
| 1960-jul | Aircraft | A146 HMS Protector allocated Whirlwind HAR.1 XA862 until c Sep 1960 | |
| 1961-aug | Aircraft | A146 HMS Protector allocated Whirlwind HAR.1 XA867/940 until crashed and w/o, on Greenwich Island Dec 1961. | |
| 1961-oct | Aircraft | A146 HMS Protector to Protector Flt again, as XA866/920, until damaged off Montevideo in Feb 1965 by XA868/940. | |
| 1961-dec-14 | Aircraft | A146 HMS Protector Whirlwind HAR.1 XA867/940 crashed during landing in Discovery Bay, Antarctica. | |
| 1964-sep-28 | Deployment | A146 HMS Protector departed HMNB Portsmouth for Antarctic summer deployment. On station in Jan 1965, near the South Orkney Isles with Ships Flt Whirlwind HAR.1 XA866/920 embarked. Returned 14 May 1965. | |
| 1965-jan | Deployment | A146 HMS Protector anchored off BAS Signy station, to set up Hi-Fix triangulation equipment on the island | |
| 1965-feb-2 | Port Visit | A146 HMS Protector arrived at Montevideo for 7 day visit, departed on 9 Feb 1965 | |
| 1965-apr-1 | Deployment | A146 HMS Protector Arrived in Valparaiso to assist after the 28 March M7.4 earthquake at a depth of 70km beneath La Ligua,c 90km to the north east and brought down the dam at El Cobré, flooding the village with mud. Departed 7 Apr. | |
| 1965-apr-27 | Port Visit | A146 HMS Protector Visit Kingston, after previously passing through the Panama Canal. Departed 30 Apr. | |
| 1966-jul | Aircraft | A146 HMS Protector short term allocation of Whirlwind HAR.9 XL899 to Protector Flt, until mid Oct 1966 | |
| 1967-jun | Aircraft | A146 HMS Protector short term allocated Whirlwind HAR.9 XL839 to Protector Flt, until mid Sep 1967. | |
| 1968-may-3 | Decommissioned | A146 HMS Protector | |
| 1968-jun-27 | | A146 HMS Protector Replaced in service as Ice Patrol Ship by HMS Endurance. | |
| 1970-feb-10 | Fate: scrapped | A146 HMS Protector sold for scrap - subsequently to Inverkeithing | |
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